Steam and other fluid-pressure engine.



W. WERRY.

STEAM AND OTHER FLUID PRESSURE ENGINES.

7 APPLICATION FILED MAR. I7. I913- F 1 1,153,588. PatentedSept. 14, 1910.

2 SHEETSSHEEI l.

I. Q S a INVENTORf 4, E E KY m zzzq zm f 2W7, JAG. fi ww v ATTORND? COLUMBIA PLANDGRAPH CO WASHINGTON. D c.

W. WERRY.

STEAM AND OTHER FLUID PRESSURE ENGINES.

APPLICATION FILED MAR- 17- I913.

1 1 53,588 Patented Sept. 14, 1915.

2 SHEETS$HEET 2.

INVENTORJ 24 74. By 4) Q W ATTORNHQ I Fig. 1 shows a section of the low piston rods,ig, h, and g, h, the pistonrods g, h, carrying cross-heads, i, and jf, worksubject of the King of Great UMTED sures mama canes.

WILLIAM WERRY, or LONDON, ENGLAND.

STEAM AND OTHER FLUID-PRESSURE ENGINE.

Application filed March 17, 1913.

To all whom it may concern: 1

Be it known that I, VILLIAM TERRY, a Britain and Ireland, and residing at 10 King William street, London, E. (1, England, have invent ed certain new and useful Improvements in and Relating to Steam and other Fluid- Pressure Engines, of which the following is a specification My invention relates to steam power units for marine and other purposes of the type in which each cylinder is provided with two pistons for actuating separate crank shafts. I

The object of the present invention is to produce anv arrangement whereby power units of the, type above indicated may be combined. with other features relating to the control and distribution of the steamand the transmission of the motive powe'rfrom the crank shafts whereby an economical arrangement is produced both with reference to the space that is occupied bythe inachinery, and to the use of the steam or motive power fluid that is involved.

. Referring now to the accompanying drawings which illustrate my invention and form part of my specification, Figure 1 shows a plan partly in section of a compound engine constructed according to my invention; Fig. 1 shows a section of thehigh pressure valve. through the line. AA in Fig. 1; pressure valve through the line BB in Fig. 1; Fig. 2 shows an elevation partly in section of the View shown in Fig. 1; Fig. 3 shows a cross section through the cylinders in Fig. 1.

In carrying myinvention into efiect according to one form, and as applied to an engine suitable for marine work,I mount the cylinders together with their distributing valve casings on a sole plate or entablature a, Figs. 1, 2 and 3.

In the present example the cylinders are arranged for a compound engine, but it will i be understood that they may also be arranged if desired for engines with triple,

quadruple or othernumber of expansions.

In the high pressure cylinder, 6, and low pressure cylinder, c two pistons, d,d., and e, efl are arranged which are connected to Specification of Letters Patent.

'pinions, g and g,

rod, 19.

Patented Sept. 14, 1915. Serial no. 754,787.

ing in slides, Z and m. Similar cross-heads working in slides, Z and m, are carried by the piston rods, 9 and h, but are omitted in order to avoid complexity in the drawing's. The cross-heads are coupled up to the crank shafts, 0 and o, by connecting rods of the usual type, only one of which, is, coiiperating with the piston rod, 72., is shown. The crank shafts are mounted in suitable bearings, 79 and 7), formed on the sole plate, and carrying at one of their ends, bevel while flanges, 71 and 7-, are formed at theirother ends for coupling to thepropeller shafts. The pinions, g and g, intermesh with bevel wheels, Q2 and g fixed to an equalizingshaft, s, mounted in bearings, t' and 70. The bearings, t, are formed on the sole plate, a, while the bearings, a, are in the present case formed in one piece with thecover, o, of the air pump,w. The air pump, as, is attached by bolts to lugs, a and a projecting from the sole plate. The shaft, 8, is formed with a crank,

also carries eccentrics, y and for working feed pumps, a and a, and an eccentric, 1, for operating the lubricating pump, 2.

Pipes, 3 and l, actas mains for conveying the oil from the lubricating pump, branches, 5, being taken ofl as required for leading the oil to the various bearings or other parts to be lubricated. The oil after lubricating the bearings or other parts is led to an oil cooler or strainer, 6, from which it is returned to the lubricating pump by the pipe, 7

The distribution of the steam to the high pressure cylinder, 6, is effected by means of valve, 8, actuated by a spindle, 9, the necessary motion being imparted thereto for working in either direction by means of eccentric rods, 10 and 11. The eccentric rods are attached to a link, 12, of the usual type, in which a block, 13, attached to the end of the valve spindle, is adapted to slide. A

hand lever, 14, sliding between quadrantshaped members, 15, is attached to a shaft,

16', mounted iii-bearings, 17, on the sole plate. 'Theshaft, 16, carries an arm, 18, which is connected to the'link, 12,1037 a Y By operating the handlever, 12, may bepositioned soas to bring either of the eccentrics into operative relationship placed in communication with being used to on the other stroke of the plstons. conduits, 28, are also'provided on the valve with the valve spindle for driving the engine either in the ahead or astern direction.

A hand wheel',20', is provided for securing the hand lever, 14, in any desired position with respect to the quadrantmembers, 15.

The-high pressure cylinder, 5, has ports, 20 and 21, for leading steam to and from the ends of the cylinder and a double port,

to and from the space 22, for leading steam Ports, 23 and 24, lead between the pistons.

to the exhaust pipe, 30. Thevalve, 8,*is

provided with sets of ports, 25 and 25 Figs. 1 andl, for supplying steam to the double port, 22, on one stroke, the ports, 25 also supply steam to the port, 21, Three fo1' p'lacing'tl1e double port, 22, in communication with the exhaust port, 23, on one stroke of the pistons and the'port, 20, in communication with the exhaust port, 23, on the'other stroke of the pistons. v

Steam from the-boiler enters the high pressure valve casing by the pipe, 26, and has free access to the interior of the valve.

' If it is assumed that the pistons are starting on their out-stroke, the valve will have moved to the left of the position shown in 'F ig.'1, so that the sets of ports, 25 and 25, 30

communicate with annular recesses, 26-, and 26*, formed in the valve casing. Steam will thus enter the double port, 22, and the pistons, g and g, are forced outward and apart; When the valveis in the above position, the neck 27, causes the port, 21, to be the exhaust port, 24, while the conduits," 28, place the port, 20, in communication with the exhaust port, 23, by means of the annular-recesses,

28 and. 28". Accordingly, when the space between the pistons is receiving steam the the exhaust.

space between each of the pistons and the end of the cylinder is in communication with When the outstroke of the pistons has been completed 'the valve will have moved into a position to the right of that shown in Fig. 1, such that the ports, 25% place the annular recess, 29, and the port, 21, in communication with the steam pwill then be open to steam. The doubleport,

22, will by means of the annular recesses, y 26? and 26", at-this time be in communication with the conduits, 28, which register with thepa'nnular recess, 28", and the exhaust port, 23.

Atthe commencement of the instrokeof 'thefpistons, the space between the pistons and the cylinder ends will'be in communication with the steam supply, while the space between the pistons is in communica-- 131011 with the exhaust.

The exhaust from the, highpressure cylinder, b,' enters the low p'ress'ure'ivalve casing, 31, by thepipe,

" The valve, 33, for distributing'steam to supply, and also uncovers the port, 20, which the low pressure cylinder is similar to the valve just described. The ports, 34 and 35, lead steam to and from the cylinder ends, the double port, 36, leads steam to and from the space betweenthe pistons, while the ports, 37 and38, communicate with the pipe,

39, leading to the condenser.

Sets of ports, 40 and 40*, on the valve, Figs. 1 and 1", register with annular recesses, 41 and 42, in the valve casing when steam is being'supplied to the space between V the pistons on one stroke, while the ports, 40?, also register when necessary with the annular recess 43, for supplying steam to the port, 35, on the other stroke ofthe pistons.

The neck, 44, allowsithe port, 35, to be placed in communication with the exhaust port, 37, and conduits, 45,'allow the double port, 36, to be placed in communication with the exhaust port, 38, through the annular recesses, 41, 42, 38. The conduits, 45, also allow the port, 34, to be placed in communication'with the exhaust through the annular recesses, 34 and 38 The'valve has three conduits, 45, formed therein as before, while the steam spaces interposed therebetween are interconnected by passages, 45. The valve, 33, is actuated by a spindle, 46, which carries a block, similar to the block, 13, before described. The block slides in a slotted link, 46*, which co-acts with eccentric rods, 47, and48, for working either in the ahead or astern direction asdesire d.

The position 01 the link, 46, is determined by the hand lever, 14, and mechanism similar to that above described for the high pressure cylinder.

On th outstroke of the pistons, steam is being. supplied. through the ports, 40 and 40, to the double port, 36, while the ports, 34 and 35, are placed in communicationwith the exhaust ports,37 and 38, by means ofthe conduits, 45, and the'n'eck, 44, respec- V Drain cocks, 49 and 50, on the high pressure and: low pressure cylinders respectively "are 'provided, the cocks, 49, being simultaneously operated by the handle, 51, and the cooks, 50, in alike manner by the handle,-52.'

necting and eccentric rods, "coiiperating therewith, and also'the bevelgearing are in "closed withina casing, 53,- glands, 54,and

The crank sha ftspo and do", with the conders and the lugs, 57, in the stufling boxes, 55, being provided at those points where the valve spindles or piston rods enter the casing.

Stays, 56, are provided between the cylinsole plate, in order to increase the rigidity of the structure.

In the arrangement which I have just described, as the valves are of the cylindrical balanced type and the ports are arranged so that the clearance space is reduced to a minimum, I am enabled to obtain very high economy and eiiiciency. Further, as a double port controls the passage leading to the space between the pistons, I am able to supply the necessary volume of steam to this space Without throttling of the same.

By inclosing the moving parts of the engine as before described, I am enabled to apply forced lubrication to the working parts, which may be automatically supplied. The sole plate may also be shaped on the undersides as shown in Fig. 2 in order to be carried on the frames of the ship.

Although I have described my improvements as applied to a marine engine, yet it will be evident that it is not limited to such application as it may also be utilized for locomotives, electric light installations, and for factory, mining or other purposes.

Having now described my invention what I claim as new and desire to secure by Let ters Patent is 1. In an elastic fluid engine in which double pistons move in opposite directions in each cylinder, the combination of double ports in said cylinders for leading working fluid to and from the space between said pistons, single ports for leading working fluid to and from the ends of said cylinders, a valve for distributing the working fluid, internal passages in said valve for live working fluid, a second set of internal passages spaced alternately with said first-mentioned set for exhausting working fluid, both sets of said passages cooperatingin the admission and exhaust of working fluid to and from said double scribed.

2. In an elastic fluid engine in which double pistons move in opposite directions in each cylinder, the combination of double ports in said cylinders for leading working fluid to and from the space between said pistons, single ports in said cylinders for leading working fluid to and from the ends of said cylinders, a valve for distributing working fluid, internal passages in said valve for live working fluid, a second set of internal passages spaced alternately with said first-mentioned set for exhaust working fluid, both sets of said passages cooperating in the admission and exhaust of working fluid to and from said double ports, said passages for live working fluid communicating with common ducts leading to said double ports by means of holes in said valve.

3. In an elastic fluid engine in which double pistons move in opposite directions in each cylinder, the combination of double ports in said cylinders for leading working fluid to and from the space between said pistons, single ports in said cylinders for leading working fluid to and from the ends of said cylinders, a valve for distributing working fluid, internal passages in said valve for live working fluid, a second set of internal passages spaced alternately with said first-mentioned set for exhaust working fluid, both sets of said passages cooperating in the admission and exhaust of working fluid to and from said ducts in said valve intercommunicating with said live working fluid passages, said passages for live working fluid communicating with common ducts leading to said double ports by means of holes in said valve.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

IVILLIAM WERRY. lVitnesses WV. WARREN TRIGG, BENTON H. MATTHEWS.

ports substantially as de- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). 0'.

double ports, crossa 

